There is no delay. Since the beginning of Envato, this has always been the case:
Please note: If the 15th day of the month falls on a weekend or an Australian public holiday then withdrawals will be processed the following business day.
Source: https://help.market.envato.com/hc/en-us/articles/202821420-When-Will-My-Withdrawal-Be-Processed-
Yes, they’ve sent early payments a few times, but not every time, and the official date is still the next business day.